MySQL常用名令

1.登录

mysql –h 主机名 –u用户名 –p密码

2.显示所有数据库

show databases;

3.进入指定数据库

use mysql;

4.查看库中所有表

show tables;  //查看所有表
show tables from mysql;  //查看其它库中所有表

5.查看当前库

select database();

6.新建一个数据库

create database spark;

7.查看版本

C:/ > mysql -version      //进入mysql客户端之前
C:/ > mysql -V          //进入mysql客户端之前
mysql > select version();   //进入mysql客户端之后

8.建表

mysql > create table customer(id varchar(30),age int, name varchar(30),birthday date);

9.查看表结构

desc customer;

10.查看表

select*from customer;

11.查询特定列

select id,name,sex from student;

12.查询数据并进行过滤

select id,name,sex from student where id=>1003;

13.运算符查询

select id,name,sex from student where age >=18 and age <=35;
select id,name,sex from student where age between 18 and 35;

14.查询变种

mselect * from student where age =18 or age =35 or age =23
mselect * from student where age in (18,23,35);

select * from student where name like '%小%';//%匹配任意多个字符，_只匹配一个字符
select * from student where name like '_明%';

select * from student where email is null;
select * from student where email is not null;

select * from student order by age     ;  //升序
select * from student order by age desc  ; //降序

15.插入数据

insert into student(id,name)values(1001,'小明')；//插入 varchar 或 date 型的数据要用 单引号 引起来

16.修改表

update student set name='小红' where id=1001;

17.删除表记录

delete from student where id =1001;

18.删除表

drop table customer;//删除表
drop database girls;//删除数据库

19.退出

mysql > exit;
ctrl+C;
quit;

本文地址：https://blog.csdn.net/qq_49516927/article/details/107675515